Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1521 and 1523 the smallest integer that is 2316483 that is divisible by both numbers.
Least Common Multiple (LCM) of 1521 and 1523 is 2316483.
LCM(1521,1523) = 2316483
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 1521 and 1523. First we will calculate the prime factors of 1521 and 1523.
Prime Factorization of 1521
3 | 1521 |
3 | 507 |
13 | 169 |
13 | 13 |
1 |
Prime factors of 1521 are 3,13. Prime factorization of 1521 in exponential form is:
1521 = 32×132
Prime Factorization of 1523
1523 | 1523 |
1 |
Prime factors of 1523 are 1523. Prime factorization of 1523 in exponential form is:
1523 = 15231
Now multiplying the highest exponent prime factors to calculate the LCM of 1521 and 1523.
LCM(1521,1523) = 32×132×15231
LCM(1521,1523) = 2316483
Factors of 1521
List of positive integer factors of 1521 that divides 1521 without a remainder.
1, 3, 9, 13, 39, 117, 169, 507, 1521
Factors of 1523
List of positive integer factors of 1523 that divides 1523 without a remainder.
1, 1523
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1521 and 1523, than apply into the LCM equation.
GCF(1521,1523) = 1
LCM(1521,1523) = ( 1521 × 1523) / 1
LCM(1521,1523) = 2316483 / 1
LCM(1521,1523) = 2316483
(i) The LCM of 1523 and 1521 is associative
LCM of 1521 and 1523 = LCM of 1523 and 1521
1. What is the LCM of 1521 and 1523?
Answer: LCM of 1521 and 1523 is 2316483.
2. What are the Factors of 1521?
Answer: Factors of 1521 are 1, 3, 9, 13, 39, 117, 169, 507, 1521. There are 9 integers that are factors of 1521. The greatest factor of 1521 is 1521.
3. What are the Factors of 1523?
Answer: Factors of 1523 are 1, 1523. There are 2 integers that are factors of 1523. The greatest factor of 1523 is 1523.
4. How to Find the LCM of 1521 and 1523?
Answer:
Least Common Multiple of 1521 and 1523 = 2316483
Step 1: Find the prime factorization of 1521
1521 = 3 x 3 x 13 x 13
Step 2: Find the prime factorization of 1523
1523 = 1523
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2316483 = 3 x 3 x 13 x 13 x 1523
Step 4: Therefore, the least common multiple of 1521 and 1523 is 2316483.